package com.mot.j2me.midlets.jbombman;

import java.util.*;

public class Enemy extends Thread {
	private Board oBoard;
	private BoardView oBoardView;
	public Player oPlayer;

	private final int iMoveTime = 500;
	private Random random;
	private int iNumbers;
	private int[][] arrPositions;
	private volatile boolean stopThread = false;
	
	public Enemy( Board board, BoardView boardview, Player player, int numbers ) {
		oBoard = board;
		oBoardView = boardview;
		oPlayer = player;
		iNumbers = numbers;
		arrPositions = new int[iNumbers][2];

		random = new Random();
		
		init();
	}

	public void init() {
		int x, y;

		for( int i=0; i<iNumbers; ) {
			x = Math.abs( random.nextInt() ) % oBoard.iCols;
			y = Math.abs( random.nextInt() ) % oBoard.iRows;
						
			if( oBoard.chBoard[x][y] != 'N' )
				continue;
				
			oBoard.chBoard[x][y] = 'E';
			arrPositions[i][0] = x;
			arrPositions[i][1] = y;
			
			i++;
		}
	}
	
	public void stopThread() {
		stopThread = true;
	}
	
	public void run() {
        while (!stopThread) {
            try {
                sleep(iMoveTime);

				for( int i=0; i<iNumbers; i++ )
					if( arrPositions[i][0] != -1 )
						move( i );
            } 
            catch (InterruptedException ie) {
            }
        }
	}
	
	private void move( int i ) {
		int x, y;

		switch( random.nextInt() % 4 ) {
		  case 0://Left
			x = arrPositions[i][0] - 1;
			y = arrPositions[i][1];
			
			if( canGo( x, y ) ) {
				System.out.println( "Enemy " + i + " Left: x=" + x + ", y=" + y );
			
				oBoard.chBoard[x+1][y] = 'N';
				oBoard.chBoard[x][y] = 'E';
				arrPositions[i][0] = x;
				oBoardView.repaintCells( x, y, 2, 1);
			}
			break;
		  case 1://Right
			x = arrPositions[i][0] + 1;
			y = arrPositions[i][1];
			
			if( canGo( x, y ) ) {
				System.out.println( "Enemy " + i + " Right: x=" + x + ", y=" + y );
			
				oBoard.chBoard[x-1][y] = 'N';
				oBoard.chBoard[x][y] = 'E';
				arrPositions[i][0] = x;
				oBoardView.repaintCells( x-1, y, 2, 1);
			}
			break;
		  case 2://Down
			x = arrPositions[i][0];
			y = arrPositions[i][1] - 1;
			
			if( canGo( x, y ) ) {
				System.out.println( "Enemy " + i + " Down: x=" + x + ", y=" + y );
			
				oBoard.chBoard[x][y+1] = 'N';
				oBoard.chBoard[x][y] = 'E';
				arrPositions[i][1] = y;
				oBoardView.repaintCells( x, y, 1, 2);
			}
			break;
		  case 3://Up
			x = arrPositions[i][0];
			y = arrPositions[i][1] + 1;
			
			if( canGo( x, y ) ) {
				System.out.println( "Enemy " + i + " Up: x=" + x + ", y=" + y );
			
				oBoard.chBoard[x][y-1] = 'N';
				oBoard.chBoard[x][y] = 'E';
				arrPositions[i][1] = y;
				oBoardView.repaintCells( x, y-1, 1, 2);
			}
			break;
		}//switch
	}
	
	private boolean canGo( int x, int y ) {
		if( oBoard.isElement( 'N', x, y ) )
			return true;
			
		if( oBoard.isElement( 'P', x, y ) )
			oPlayer.die();
			
		return false;
	}
	
	public void die( int x, int y ) {
		System.out.println( "Bomb die: x=" + x + ", y=" + y );
		int i;
		
		for( i=0; i<iNumbers; i++ )
			if( (arrPositions[i][0] == x)&&(arrPositions[i][1] == y) ) {
				arrPositions[i][0] = -1;
				break;
			}
			
		for( i=0; i<iNumbers; i++ )
			if( arrPositions[i][0] != -1 )
				break;
				
		if( i == iNumbers ) {
			oBoard.isWin = true;
			oBoardView.repaint();
		}
	}
	
	public void dieAll() {
		for( int i=0; i<iNumbers; i++ )
			arrPositions[i][0] = -1;
	}
}